Growth

Question 1

Define mitosis

Answer 1

• type of nuclear division
• production of 2 daughter nuclei that are genetically identical
• daughter nuclei have same no. of chromosomes as parent nucleus

Question 2

Chromosomes

Answer 2

• rod-like structure visible in nucleus

- made up of deoxyribonucleic acid (DNA) and histone proteins

Question 3

Homologous chromosomes

Answer 3

• exist in pairs
• one maternal, one paternal
• same gene loci, length, centromere position, different alleles

Question 4

Growth in plants

Answer 4

• restricted to growing points (the tips of roots and shoots)
• occur throughout life of plant

Question 5

Growth in animals

Answer 5

• occurs throughout body

- stops aft certain age (when animal rches maturity)

Question 6

Types of cell division

Answer 6

• mitosis

- meiosis

Question 7

Mitosis

Answer 7

• involved in growth and development

- produces genetically identical cells

Question 8

Meiosis

Answer 8

• involved in reproduction

- produces genetically diff cells